The Economic Impact of the Deep Water Horizon Disaster on the Local Seafood Industry
Imagine that the United States is preparing for the outbreak of an unusual
Asian disease that is expected to kill 600 people. Two alternative programs
to combat the disease have been proposed. Assume that the exact
scientific estimates of the consequences of the programs are as follows.
Program A: If Program A is adopted, 200 people will be saved.
Program B: If Program B is adopted, there is a one-third probability that
600 people will be saved and a two-thirds probability that no people will
be saved.
Which of the two programs would you favor?
Big Gamble
Choose:
(a) receive $10 million for sure (expected value = $10
million)
(a) flip a coin and receive $22 million for heads but
nothing for tails (expected value = $11 million).
Lawsuit
You are being sued for $500,000 and estimate that you
have a 50 percent chance of losing the case in court
(expected value = –$250,000).
However, the other side is willing to accept an out-ofcourt
settlement of $240,000 (expected value = –
$240,000).
Would you:
(a) fight the case
(b) settle out of court?
Utility instead of value
Daniel Bernoulli
What Do People Choose?
Decision A
0
10
20
30
40
50
60
70
80
90
Option A (sure
gain)
Option B
(uncertain gain)
Percent Choosing Option
Decision B
0
10
20
30
40
50
60
70
80
90
100
Option C (sure
loss)
Option D
(uncertain loss)
A change in the ‘‘framing’’ of choices—
in this case, from losses to gains—can
dramatically affect how people make a
decision
We evaluate outcomes relative to a
neutral reference point.
Sell or Hold?
You were given 100 shares of stock in XYZ Corporation
two years ago, when the value of the stock was $20 per
share. Unfortunately, the stock has dropped to $10 per share
during the two years that you have held the asset. The
corporation is currently drilling for oil in an area that may
turn out to be a big “hit.” On the other hand, they may find
nothing. Geological analysis suggests that if they hit, the
stock is expected to go back up to $20 per share. If the well
is dry, however, the value of the stock will fall to $0 per
share.
Do you want to sell your stock now for $10 per share?
Preference Reversals
• Sub-optimal decision portfolios
• “Pseudocertainty” and our judgments
• Insurance
• Evaluations of transactions
• Endowment effect
• Mental accounting
• Bonuses versus rebates
• Separate versus joint evaluation
Framing and the Irrationality of the
Sum of Our Choices
Imagine that you face the following pair of concurrent decisions. First,
examine both decisions, and then indicate the options you prefer.
Decision A
Choose between:
a. a sure gain of $240 84%
b. a 25 percent chance to gain $1,000 and a 75 percent chance to gain
nothing
Decision B
Choose between:
c. a sure loss of $750
d. a 75 percent chance to lose $1,000 and a 25 percent chance to lose
nothing 87%
Framing and the Irrationality of the
Sum of Our Choices
Choose between:
e. a 25 percent chance to win $240 and a 75
percent chance to lose $760
f. a 25 percent chance to win $250 and a 75
percent chance to lose $750 86%
Preference “reversal”…
Think of portfolio selection, budgeting, and funding for new projects,
etc…
The “certainty” effect
Russian Roulette
Question 1
How much would you pay to remove the bullet
and reduce the likelihood of death from 1/6
(17%) to 0?
Question 2